# chearon/dropflow

A CSS layout engine

Repository: https://github.com/chearon/dropflow
Canonical: https://ross.abutalabs.com/products/dropflow
Homepage: https://chearon.github.io/dropflow/
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-08-14T03:43:26+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 45, longevity 100
- inputs: {"age_days": 2600, "days_push": 19, "days_rel": 290, "gap_med": 69, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1368, forks 31 (observed 2026-08-28T04:04:31.656368+00:00)

## What it is
Dropflow is a CSS layout engine written in TypeScript that implements foundational CSS standards (inlines, blocks, floats, positioning) with high-quality international text layout. It can render to canvas in the browser or generate PDFs and images on the backend via Node and node-canvas.

## Use cases
- generate pdfs from html and css on the server
- render rich wrapped text to a canvas in the browser
- lay out bidirectional and rtl text
- render multilingual text with font fallbacks
- convert html with css styles into images with node-canvas

## When to choose
- you need standards-based CSS block/inline/float layout outside the browser
- you need high-quality text shaping, bidi, and grapheme-level font fallback
- you want to render HTML/CSS content to canvas or PDF in Node

## When to avoid
- you need flexbox or grid layout, which are not supported
- you need a full browser rendering engine with JavaScript interaction
- you need a mature production engine like Blink or WebKit

## Facets
- artifact type: library
- maturity: active
- function: graphics, image-processing, pdf, parser, ui-components
- domain: web-development, frontend, graphics, text-editors, pdf
- platform: browser
- tags: css-layout-engine, text-layout, typography, canvas-rendering, html-parsing, rtl-text, font-shaping, nodejs, web-server, typescript

## Member repositories
- chearon/dropflow (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:31.656368+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:41:02.866017+00:00, confidence not recorded.
  - readme: https://github.com/chearon/dropflow (fetched 2026-08-28T04:04:31.656368+00:00, sha 5861461560ba)
  - homepage: https://chearon.github.io/dropflow/ (fetched 2026-08-29T11:58:20.083038+00:00, sha 988b1a749bd9)
- Data as of 2026-08-30T08:39:29.467469+00:00.